The celebration of the liturgy is central to the life of faith and also for the self-understanding of the various churches in the East and West. An amazing convergence of Christian denominations has taken place in the area of liturgy and liturgical studies since the Second Vatican Council, entering also into the practice of liturgical celebration. In this collection - with contributions from a symposium held in Vienna in November 2007 - internationally recognized scholars from various Christian denominations present the ecumenical contributions and the Jewish roots of the Christian liturgy. PLEASE NOTE: The individual essays in this volume are written in various languages. The book contains ten essays in English, eight in German, and two in French.] (Series: Austrian Studies of Liturgy and Sacramental Theology / Osterreichische Studien zur Liturgiewissenschaft und Sakramententheologie - Vol. 6)